| Old boy vs Eddy | 24–22 | 52.17% |
| Old boy vs Bryan | 27–11 | 71.05% |
| Old boy vs Jin | 18–12 | 60.00% |
| Old boy vs Hwoarang | 18–11 | 62.07% |
| Old boy vs Law | 18–6 | 75.00% |
| Old boy vs Dragunov | 14–8 | 63.64% |
| Old boy vs Lars | 13–6 | 68.42% |
| Old boy vs Leroy | 11–6 | 64.71% |
| Old boy vs King | 8–8 | 50.00% |
| Old boy vs Jun | 11–5 | 68.75% |
| Old boy vs Azucena | 13–3 | 81.25% |
| Old boy vs Heihachi | 6–10 | 37.50% |
| Old boy vs Xiaoyu | 8–5 | 61.54% |
| Old boy vs Nina | 8–3 | 72.73% |
| Old boy vs Lee | 4–7 | 36.36% |
| Old boy vs Clive | 3–8 | 27.27% |
| Old boy vs Paul | 9–1 | 90.00% |
| Old boy vs Steve | 5–3 | 62.50% |
| Old boy vs Devil Jin | 4–4 | 50.00% |
| Old boy vs Reina | 7–1 | 87.50% |
| Old boy vs Kazuya | 7–0 | 100.00% |
| Old boy vs Alisa | 6–1 | 85.71% |
| Old boy vs Lili | 4–2 | 66.67% |
| Old boy vs Claudio | 2–4 | 33.33% |
| Old boy vs Victor | 2–3 | 40.00% |
| Old boy vs Fahkumram | 2–3 | 40.00% |
| Old boy vs Shaheen | 4–0 | 100.00% |
| Old boy vs Anna | 4–0 | 100.00% |
| Old boy vs Yoshimitsu | 1–2 | 33.33% |
| Old boy vs Asuka | 3–0 | 100.00% |
| Old boy vs Feng | 2–1 | 66.67% |
| Old boy vs Lidia | 1–2 | 33.33% |
| Old boy vs Panda | 2–0 | 100.00% |
| Old boy vs Zafina | 2–0 | 100.00% |
| Old boy vs Raven | 0–2 | 0.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.